LatinIME/java/src/com/android/inputmethod/keyboard/KeyboardSwitcher.java

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/*
* Copyright (C) 2008 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.android.inputmethod.keyboard;
import android.content.Context;
import android.content.SharedPreferences;
import android.content.res.Resources;
import android.preference.PreferenceManager;
import android.util.Log;
import android.view.ContextThemeWrapper;
import android.view.LayoutInflater;
import android.view.View;
import android.view.inputmethod.EditorInfo;
import com.android.inputmethod.compat.InputMethodServiceCompatUtils;
import com.android.inputmethod.event.Event;
import com.android.inputmethod.keyboard.KeyboardLayoutSet.KeyboardLayoutSetException;
import com.android.inputmethod.keyboard.emoji.EmojiPalettesView;
import com.android.inputmethod.keyboard.internal.KeyboardState;
import com.android.inputmethod.keyboard.internal.KeyboardTextsSet;
import com.android.inputmethod.latin.InputView;
import com.android.inputmethod.latin.LatinIME;
import com.android.inputmethod.latin.R;
import com.android.inputmethod.latin.RichInputMethodManager;
import com.android.inputmethod.latin.SubtypeSwitcher;
import com.android.inputmethod.latin.WordComposer;
import com.android.inputmethod.latin.settings.Settings;
import com.android.inputmethod.latin.settings.SettingsValues;
import com.android.inputmethod.latin.utils.ResourceUtils;
import com.android.inputmethod.latin.utils.ScriptUtils;
public final class KeyboardSwitcher implements KeyboardState.SwitchActions {
private static final String TAG = KeyboardSwitcher.class.getSimpleName();
private SubtypeSwitcher mSubtypeSwitcher;
private SharedPreferences mPrefs;
private InputView mCurrentInputView;
private View mMainKeyboardFrame;
private MainKeyboardView mKeyboardView;
private EmojiPalettesView mEmojiPalettesView;
private LatinIME mLatinIME;
private boolean mIsHardwareAcceleratedDrawingEnabled;
private KeyboardState mState;
private KeyboardLayoutSet mKeyboardLayoutSet;
// TODO: The following {@link KeyboardTextsSet} should be in {@link KeyboardLayoutSet}.
private final KeyboardTextsSet mKeyboardTextsSet = new KeyboardTextsSet();
private KeyboardTheme mKeyboardTheme;
private Context mThemeContext;
private static final KeyboardSwitcher sInstance = new KeyboardSwitcher();
public static KeyboardSwitcher getInstance() {
return sInstance;
}
private KeyboardSwitcher() {
// Intentional empty constructor for singleton.
}
public static void init(final LatinIME latinIme) {
final SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(latinIme);
sInstance.initInternal(latinIme, prefs);
}
private void initInternal(final LatinIME latinIme, final SharedPreferences prefs) {
mLatinIME = latinIme;
mPrefs = prefs;
mSubtypeSwitcher = SubtypeSwitcher.getInstance();
mState = new KeyboardState(this);
mIsHardwareAcceleratedDrawingEnabled =
InputMethodServiceCompatUtils.enableHardwareAcceleration(mLatinIME);
}
public void updateKeyboardTheme() {
final boolean themeUpdated = updateKeyboardThemeAndContextThemeWrapper(
mLatinIME, KeyboardTheme.getKeyboardTheme(mPrefs));
if (themeUpdated && mKeyboardView != null) {
mLatinIME.setInputView(onCreateInputView(mIsHardwareAcceleratedDrawingEnabled));
}
}
private boolean updateKeyboardThemeAndContextThemeWrapper(final Context context,
final KeyboardTheme keyboardTheme) {
if (mThemeContext == null || !keyboardTheme.equals(mKeyboardTheme)) {
mKeyboardTheme = keyboardTheme;
mThemeContext = new ContextThemeWrapper(context, keyboardTheme.mStyleId);
KeyboardLayoutSet.onKeyboardThemeChanged();
return true;
}
return false;
}
public void loadKeyboard(final EditorInfo editorInfo, final SettingsValues settingsValues,
final int currentAutoCapsState, final int currentRecapitalizeState) {
final KeyboardLayoutSet.Builder builder = new KeyboardLayoutSet.Builder(
mThemeContext, editorInfo);
final Resources res = mThemeContext.getResources();
final int keyboardWidth = ResourceUtils.getDefaultKeyboardWidth(res);
final int keyboardHeight = ResourceUtils.getDefaultKeyboardHeight(res);
builder.setKeyboardGeometry(keyboardWidth, keyboardHeight);
builder.setSubtype(mSubtypeSwitcher.getCurrentSubtype());
builder.setVoiceInputKeyEnabled(settingsValues.mShowsVoiceInputKey);
builder.setLanguageSwitchKeyEnabled(mLatinIME.shouldShowLanguageSwitchKey());
mKeyboardLayoutSet = builder.build();
try {
mState.onLoadKeyboard(currentAutoCapsState, currentRecapitalizeState);
mKeyboardTextsSet.setLocale(mSubtypeSwitcher.getCurrentSubtypeLocale(), mThemeContext);
} catch (KeyboardLayoutSetException e) {
Log.w(TAG, "loading keyboard failed: " + e.mKeyboardId, e.getCause());
return;
}
}
public void saveKeyboardState() {
if (getKeyboard() != null || isShowingEmojiPalettes()) {
mState.onSaveKeyboardState();
}
}
public void onHideWindow() {
if (mKeyboardView != null) {
mKeyboardView.onHideWindow();
}
}
private void setKeyboard(final Keyboard keyboard) {
// Make {@link MainKeyboardView} visible and hide {@link EmojiPalettesView}.
final SettingsValues currentSettingsValues = Settings.getInstance().getCurrent();
setMainKeyboardFrame(currentSettingsValues);
// TODO: pass this object to setKeyboard instead of getting the current values.
final MainKeyboardView keyboardView = mKeyboardView;
final Keyboard oldKeyboard = keyboardView.getKeyboard();
keyboardView.setKeyboard(keyboard);
mCurrentInputView.setKeyboardTopPadding(keyboard.mTopPadding);
keyboardView.setKeyPreviewPopupEnabled(
currentSettingsValues.mKeyPreviewPopupOn,
currentSettingsValues.mKeyPreviewPopupDismissDelay);
keyboardView.setKeyPreviewAnimationParams(
currentSettingsValues.mHasCustomKeyPreviewAnimationParams,
currentSettingsValues.mKeyPreviewShowUpStartXScale,
currentSettingsValues.mKeyPreviewShowUpStartYScale,
currentSettingsValues.mKeyPreviewShowUpDuration,
currentSettingsValues.mKeyPreviewDismissEndXScale,
currentSettingsValues.mKeyPreviewDismissEndYScale,
currentSettingsValues.mKeyPreviewDismissDuration);
keyboardView.updateShortcutKey(mSubtypeSwitcher.isShortcutImeReady());
final boolean subtypeChanged = (oldKeyboard == null)
|| !keyboard.mId.mLocale.equals(oldKeyboard.mId.mLocale);
final int languageOnSpacebarFormatType = mSubtypeSwitcher.getLanguageOnSpacebarFormatType(
keyboard.mId.mSubtype);
final boolean hasMultipleEnabledIMEsOrSubtypes = RichInputMethodManager.getInstance()
.hasMultipleEnabledIMEsOrSubtypes(true /* shouldIncludeAuxiliarySubtypes */);
keyboardView.startDisplayLanguageOnSpacebar(subtypeChanged, languageOnSpacebarFormatType,
hasMultipleEnabledIMEsOrSubtypes);
}
public Keyboard getKeyboard() {
if (mKeyboardView != null) {
return mKeyboardView.getKeyboard();
}
return null;
}
// TODO: Remove this method. Come up with a more comprehensive way to reset the keyboard layout
// when a keyboard layout set doesn't get reloaded in LatinIME.onStartInputViewInternal().
public void resetKeyboardStateToAlphabet(final int currentAutoCapsState,
final int currentRecapitalizeState) {
mState.onResetKeyboardStateToAlphabet(currentAutoCapsState, currentRecapitalizeState);
}
public void onPressKey(final int code, final boolean isSinglePointer,
final int currentAutoCapsState, final int currentRecapitalizeState) {
mState.onPressKey(code, isSinglePointer, currentAutoCapsState, currentRecapitalizeState);
}
public void onReleaseKey(final int code, final boolean withSliding,
final int currentAutoCapsState, final int currentRecapitalizeState) {
mState.onReleaseKey(code, withSliding, currentAutoCapsState, currentRecapitalizeState);
}
public void onFinishSlidingInput(final int currentAutoCapsState,
final int currentRecapitalizeState) {
mState.onFinishSlidingInput(currentAutoCapsState, currentRecapitalizeState);
}
// Implements {@link KeyboardState.SwitchActions}.
@Override
public void setAlphabetKeyboard() {
setKeyboard(mKeyboardLayoutSet.getKeyboard(KeyboardId.ELEMENT_ALPHABET));
}
// Implements {@link KeyboardState.SwitchActions}.
@Override
public void setAlphabetManualShiftedKeyboard() {
setKeyboard(mKeyboardLayoutSet.getKeyboard(KeyboardId.ELEMENT_ALPHABET_MANUAL_SHIFTED));
}
// Implements {@link KeyboardState.SwitchActions}.
@Override
public void setAlphabetAutomaticShiftedKeyboard() {
setKeyboard(mKeyboardLayoutSet.getKeyboard(KeyboardId.ELEMENT_ALPHABET_AUTOMATIC_SHIFTED));
}
// Implements {@link KeyboardState.SwitchActions}.
@Override
public void setAlphabetShiftLockedKeyboard() {
setKeyboard(mKeyboardLayoutSet.getKeyboard(KeyboardId.ELEMENT_ALPHABET_SHIFT_LOCKED));
}
// Implements {@link KeyboardState.SwitchActions}.
@Override
public void setAlphabetShiftLockShiftedKeyboard() {
setKeyboard(mKeyboardLayoutSet.getKeyboard(KeyboardId.ELEMENT_ALPHABET_SHIFT_LOCK_SHIFTED));
}
// Implements {@link KeyboardState.SwitchActions}.
@Override
public void setSymbolsKeyboard() {
setKeyboard(mKeyboardLayoutSet.getKeyboard(KeyboardId.ELEMENT_SYMBOLS));
}
private void setMainKeyboardFrame(final SettingsValues settingsValues) {
mMainKeyboardFrame.setVisibility(
settingsValues.mHasHardwareKeyboard ? View.GONE : View.VISIBLE);
mEmojiPalettesView.setVisibility(View.GONE);
mEmojiPalettesView.stopEmojiPalettes();
}
// Implements {@link KeyboardState.SwitchActions}.
@Override
public void setEmojiKeyboard() {
final Keyboard keyboard = mKeyboardLayoutSet.getKeyboard(KeyboardId.ELEMENT_ALPHABET);
mMainKeyboardFrame.setVisibility(View.GONE);
mEmojiPalettesView.startEmojiPalettes(
mKeyboardTextsSet.getText(KeyboardTextsSet.SWITCH_TO_ALPHA_KEY_LABEL),
mKeyboardView.getKeyVisualAttribute(), keyboard.mIconsSet);
mEmojiPalettesView.setVisibility(View.VISIBLE);
}
public void onToggleEmojiKeyboard() {
if (mKeyboardLayoutSet == null || !isShowingEmojiPalettes()) {
mLatinIME.startShowingInputView();
setEmojiKeyboard();
} else {
mLatinIME.stopShowingInputView();
setAlphabetKeyboard();
}
}
// Implements {@link KeyboardState.SwitchActions}.
@Override
public void setSymbolsShiftedKeyboard() {
setKeyboard(mKeyboardLayoutSet.getKeyboard(KeyboardId.ELEMENT_SYMBOLS_SHIFTED));
}
// Future method for requesting an updating to the shift state.
public void requestUpdatingShiftState(final int currentAutoCapsState,
final int currentRecapitalizeState) {
mState.onUpdateShiftState(currentAutoCapsState, currentRecapitalizeState);
}
// Implements {@link KeyboardState.SwitchActions}.
@Override
public void startDoubleTapShiftKeyTimer() {
final MainKeyboardView keyboardView = getMainKeyboardView();
if (keyboardView != null) {
keyboardView.startDoubleTapShiftKeyTimer();
}
}
// Implements {@link KeyboardState.SwitchActions}.
@Override
public void cancelDoubleTapShiftKeyTimer() {
final MainKeyboardView keyboardView = getMainKeyboardView();
if (keyboardView != null) {
keyboardView.cancelDoubleTapShiftKeyTimer();
}
}
// Implements {@link KeyboardState.SwitchActions}.
@Override
public boolean isInDoubleTapShiftKeyTimeout() {
final MainKeyboardView keyboardView = getMainKeyboardView();
return keyboardView != null && keyboardView.isInDoubleTapShiftKeyTimeout();
}
/**
* Updates state machine to figure out when to automatically switch back to the previous mode.
*/
public void onEvent(final Event event, final int currentAutoCapsState,
final int currentRecapitalizeState) {
mState.onEvent(event, currentAutoCapsState, currentRecapitalizeState);
}
public boolean isShowingEmojiPalettes() {
return mEmojiPalettesView != null && mEmojiPalettesView.isShown();
}
public boolean isShowingMoreKeysPanel() {
if (isShowingEmojiPalettes()) {
return false;
}
return mKeyboardView.isShowingMoreKeysPanel();
}
public View getVisibleKeyboardView() {
if (isShowingEmojiPalettes()) {
return mEmojiPalettesView;
}
return mKeyboardView;
}
public MainKeyboardView getMainKeyboardView() {
return mKeyboardView;
}
public void deallocateMemory() {
if (mKeyboardView != null) {
mKeyboardView.cancelAllOngoingEvents();
mKeyboardView.deallocateMemory();
}
if (mEmojiPalettesView != null) {
mEmojiPalettesView.stopEmojiPalettes();
}
}
public View onCreateInputView(final boolean isHardwareAcceleratedDrawingEnabled) {
if (mKeyboardView != null) {
mKeyboardView.closing();
}
updateKeyboardThemeAndContextThemeWrapper(
mLatinIME, KeyboardTheme.getKeyboardTheme(mPrefs));
mCurrentInputView = (InputView)LayoutInflater.from(mThemeContext).inflate(
R.layout.input_view, null);
mMainKeyboardFrame = mCurrentInputView.findViewById(R.id.main_keyboard_frame);
mEmojiPalettesView = (EmojiPalettesView)mCurrentInputView.findViewById(
R.id.emoji_palettes_view);
mKeyboardView = (MainKeyboardView) mCurrentInputView.findViewById(R.id.keyboard_view);
mKeyboardView.setHardwareAcceleratedDrawingEnabled(isHardwareAcceleratedDrawingEnabled);
mKeyboardView.setKeyboardActionListener(mLatinIME);
mEmojiPalettesView.setHardwareAcceleratedDrawingEnabled(
isHardwareAcceleratedDrawingEnabled);
mEmojiPalettesView.setKeyboardActionListener(mLatinIME);
return mCurrentInputView;
}
public void onNetworkStateChanged() {
if (mKeyboardView != null) {
mKeyboardView.updateShortcutKey(mSubtypeSwitcher.isShortcutImeReady());
}
}
public int getKeyboardShiftMode() {
final Keyboard keyboard = getKeyboard();
if (keyboard == null) {
return WordComposer.CAPS_MODE_OFF;
}
switch (keyboard.mId.mElementId) {
case KeyboardId.ELEMENT_ALPHABET_SHIFT_LOCKED:
case KeyboardId.ELEMENT_ALPHABET_SHIFT_LOCK_SHIFTED:
return WordComposer.CAPS_MODE_MANUAL_SHIFT_LOCKED;
case KeyboardId.ELEMENT_ALPHABET_MANUAL_SHIFTED:
return WordComposer.CAPS_MODE_MANUAL_SHIFTED;
case KeyboardId.ELEMENT_ALPHABET_AUTOMATIC_SHIFTED:
return WordComposer.CAPS_MODE_AUTO_SHIFTED;
default:
return WordComposer.CAPS_MODE_OFF;
}
}
public int getCurrentKeyboardScriptId() {
if (null == mKeyboardLayoutSet) {
return ScriptUtils.SCRIPT_UNKNOWN;
}
return mKeyboardLayoutSet.getScriptId();
}
}